# W-CRN154

Source: https://xmlvalid.com/rules/W-CRN154

> CreditNote line '…' with lineExtensionAmount (…) cannot be evaluated since either 'cbc:CalculationRate', 'cbc:MathematicOperatorCode' or both are not present in 'CreditNote/cac:PricingExchangeRate'

- Level: warning
- Rule sets: OIOUBL 2.1 Credit Note rules (Denmark) 1.17.2
- Context: `doc:CreditNote/cac:CreditNoteLine`
- Test: `($notFree and not($noExchangeRate) and $CRandMOC)`

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